CN213335219U - Closed explosion-proof constant temperature drying equipment - Google Patents

Abstract

The utility model provides a closed explosion-proof constant temperature drying equipment belongs to the explosion-proof equipment field. The early warning method and the early warning device solve the problems that the prior art is not safe enough and cannot early warn in advance. The utility model provides a closed explosion-proof constant temperature drying equipment, the main tank body that has drying zone and zone of heating including inside, separate by a baffle between drying zone and the zone of heating, set up the air inlet on the baffle, still include exhaust apparatus in the main tank body, the explosion-proof door of main tank body front end installation, the explosion-proof lid of position department installation in the corresponding drying zone in main tank body top, the position department in the corresponding zone of heating in main tank body top sets up centrifugal fan, the gas vent in supplying gas discharge to centrifugal fan is seted up to the position department that is close to centrifugal fan on the main tank body, be provided with heating device in the zone of heating, be provided with detection device in the zone of drying, this detection device comprises gas detector and temperature sensor, the control box has been installed to. The utility model has the advantages of early warning and safety.

Description

Closed explosion-proof constant temperature drying equipment

Technical Field

The utility model belongs to the explosion-proof equipment field relates to an explosion-proof drying equipment, in particular to closed explosion-proof constant temperature drying equipment.

Background

The drying oven is also called as an oven or an oven and is applied to the fields of biochemistry, chemical pharmacy, medical treatment and health, agricultural scientific research, environmental protection and the like. The conventional drying method is to dry by blowing hot air with a blower, and although the drying method can perform a drying function, there are some problems. The hot-blast steam that probably has gasification in the air-blower blows, it is not good to cause drying effect, the air-blower blows hot-blast drying, the dry temperature can not be controlled, can not reach the dry purpose of constant temperature, the high temperature or low excessively can cause the destruction to the inner structure of inspection sample, reduce the quality of inspection sample and the qualification rate of inspection sample, and dry under inclosed environment, the work piece that contains volatile gas can take place spontaneous explosion or external factor when inflammable, explosive gas reach certain explosion limit and lead to detonating, the ignition when heating the drying process, can cause the potential safety hazard. Therefore, it is necessary to design a safe and closed drying apparatus suitable for different pressures with early warning.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a be fit for different pressure, have early warning, safe closed explosion-proof constant temperature drying equipment in advance.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a closed explosion-proof constant temperature drying equipment, including the inside main tank body that has drying zone and zone of heating, separate by a baffle between drying zone and the zone of heating, set up the air inlet that makes the zone of heating be linked together with the drying zone on the baffle, still including the exhaust apparatus that can be with harmful gas exhaust in the main tank body, openable explosion-proof door is installed to main tank body front end, openable explosion-proof lid is installed to the position department of the corresponding drying zone in main tank body top, the position department of the corresponding zone of heating in main tank body top is provided with the centrifugal fan that can let in gas in the zone of heating, the exhaust port that supplies gas discharge to the centrifugal fan in is seted up to the position department that is close to centrifugal fan on the main tank body, be provided with the heating device who is used for gas heating in the zone of heating, be provided with the detection device who is used for detecting gas concentration and gas temperature in the drying zone The sensor is composed of a sensor, and the front end part of the main box body is provided with a control box for monitoring and controlling the work of the drying area and the heating area.

In the above-mentioned closed type explosion-proof constant temperature drying equipment, the heating device is composed of a heat exchange mechanism for transferring heat from hot fluid to cold fluid and an electric heater for heating and warming the gas.

In the above-mentioned closed explosion-proof constant temperature drying equipment, the heating zone is also provided with a fire light detection device with a fire light detection function.

In the above-mentioned closed explosion-proof constant temperature drying equipment, the roof plate on install the exhaust valve.

In foretell explosion-proof constant temperature drying equipment of closed, the front end of control box install the liquid crystal touch-sensitive screen that detects the work of drying zone and zone of heating, the below of liquid crystal touch-sensitive screen is provided with the control switch that control exhaust fan and centrifugal fan start and the alarm that has alarming function.

Compared with the prior art, the closed type explosion-proof constant-temperature drying equipment detects the explosion limit value in the heating area, when the drying area is dried midway, the explosion limit value reaches LEL25% first-level early warning, the heating is not stopped, and the exhaust fan of the drying equipment and the exhaust fan of the drying workshop begin to exhaust air. And (3) performing secondary early warning when the explosion limit value reaches LEL50%, alarming by an audible and visual alarm, stopping heating, starting to exhaust air by a drying equipment exhaust fan and a drying workshop fan, and automatically starting a heating system after the exhaust reaches safety limit. Therefore, the invention prompts the change of the explosion limit value in the constant-temperature drying box of the working personnel through the detection device in the drying area, and the change is safer compared with the prior series of products.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic top structure diagram of the present invention.

In the figure, 1, a main box body; 2. a partition plate; 3. an air inlet; 4. an explosion vent; 5. an explosion-proof cover; 6. a centrifugal fan; 7. an exhaust port; 8. a detection device; 9. a control box; 10. a heat exchange mechanism; 11. an electric heater; 12. a flare detection device; 15. an exhaust valve; 17. A control switch; 18. an alarm.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, the enclosed explosion-proof constant temperature drying apparatus comprises a main box body 1 having a drying zone and a heating zone inside, the drying zone and the heating zone are separated by a partition plate 2, the partition plate 2 is provided with an air inlet 3 communicating the heating zone and the drying zone, the main box body 1 is further provided with an exhaust device capable of exhausting harmful gas, the front end of the main box body 1 is provided with an openable explosion-proof door 4, the top of the main box body 1 is provided with an openable explosion-proof cover 5 corresponding to the drying zone, the top of the main box body 1 is provided with a centrifugal fan 6 capable of introducing gas into the heating zone at a position corresponding to the heating zone, the main box body 1 is provided with an exhaust port 7 for exhausting gas into the centrifugal fan 6 at a position close to the centrifugal fan 6, the drying zone is provided with a heating device for heating gas and a detection device 8 for detecting gas concentration and gas temperature, the detection device 8 is composed of a gas detector for detecting gas concentration and a temperature sensor for detecting gas temperature, and the front end part of the main box body 1 is provided with a control box 9 for monitoring and controlling the work of the drying area and the heating area. The heating device consists of a heat exchange mechanism 10 for transferring heat from hot fluid to cold fluid and an electric heater 11 for heating the gas. A fire detection device 12 having a fire detection function is also provided in the heating zone. The control panel controls the heating device, the monitoring device and the flare detection device 12 to work through the PLC system. The top plate is provided with an exhaust valve 15. The front end part of the control box 9 is provided with a liquid crystal touch screen for detecting the work of the drying area and the heating area, and a control switch 17 for controlling the start of the exhaust fan and the centrifugal ventilator 6 and an alarm 18 with an alarm function are arranged below the liquid crystal touch screen.

The working principle is that a plurality of workpieces to be heated are placed in a drying area, gas enters a heating area from the outside through a centrifugal fan 6, the gas flows under the action of the centrifugal fan 6, a heating device heats the gas in the heating area, the gas enters the drying area through an air inlet 3 formed in the bottom of the heating area, the workpieces in the drying area are heated through the heated gas, meanwhile, the gas can return to the centrifugal fan 6 again through an air outlet 7 formed in the upper part of the drying area, the gas is sucked into the heating area through the centrifugal fan 6 again and works in a circulating mode, and the temperature of the gas in drying equipment is kept in a constant state through continuous circulating flow.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (4)

1. A closed type explosion-proof constant temperature drying device comprises a main box body (1) with a drying area and a heating area inside, and is characterized in that the drying area and the heating area are separated by a partition plate (2), the partition plate (2) is provided with an air inlet (3) communicated with the heating area and the drying area, the main box body (1) is internally provided with an exhaust device capable of exhausting harmful gas, the front end part of the main box body (1) is provided with an openable and closable explosion-proof door (4), the position of the corresponding drying area at the top of the main box body (1) is provided with an openable and closable explosion-proof cover (5), the position of the corresponding heating area at the top of the main box body (1) is provided with a centrifugal ventilator (6) capable of leading gas into the heating area, the position of the main box body (1) close to the centrifugal ventilator (6) is provided with an exhaust port (7) for discharging gas into the centrifugal ventilator (6), the heating zone in be provided with the heating device who is used for gas heating, the drying zone in be provided with detection device (8) that are used for detecting gas concentration and gas temperature, this detection device (8) comprise the gas detector who is used for detecting gas concentration and the temperature sensor who is used for detecting gas temperature, the control box (9) that are used for monitoring and control drying zone and heating zone work are installed to the front end of main tank body (1).

2. An enclosed explosion-proof thermostatic drying apparatus according to claim 1, characterized in that the heating device is composed of a heat exchange mechanism (10) for transferring heat from hot fluid to cold fluid and an electric heater (11) for heating up the gas.

3. A closed type explosion-proof constant temperature drying equipment according to claim 1, characterized in that a fire light detection device (12) with a fire light detection function is further arranged in the heating zone.

4. A closed type explosion-proof constant temperature drying device according to claim 1, characterized in that a liquid crystal touch screen for detecting the operation of the drying area and the heating area is installed at the front end part of the control box (9), and a control switch (17) for controlling the start of the exhaust fan and the centrifugal fan (6) and an alarm (18) with an alarm function are arranged below the liquid crystal touch screen.

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